Within a year Apple will make MobileMe an iPhone back-end peripheral. When they do that iPhone users will not need a local copy of iTunes (PC or Mac), and they won't need an ISP. After that Apple will make MobileMe into a Facebook competitor.

Next year's iPad will come with a starter MobileMe subscription.

[1] I'm a dreadful prognosticator, but it doesn't stop me. I'm often right in the long run, but usually premature.